Cannot Send Emails? Here's How to Fix It

Outlook may fail to open email due to corrupted Outlook profiles, add-ins, damaged OST/PST files, or outdated software. Antivirus conflicts and system issues can also cause startup errors or loading failures. This startup issue often appears when profiles get corrupted, damaged Outlook files, add-ins conflicts with system updates or antivirus. Should you common Outlook startup issues decide to remove a profile, back up the data files first. All offline cached content will be deleted when you choose Remove. For more information, see Introduction to Outlook Data Files (.pst and .ost). This issue has been mitigated and we are continuing to monitor the issue to ensure stability. The root cause was the deployment of an incorrect campaign data file, which led to false positive campaign detection. We have since reverted to the right data file and the outbound email flow has returned to common Outlook startup issues a normal state. We also released a new rule that corrected the wrong campaign verdict for all impacted customers during the incident. While these Microsoft accounts work in other Microsoft products (e.g. OneDrive, Windows, Xbox), they are non-functional when visiting Outlook.com. While Outlook’s built-in Inbox Repair tool (ScanPST.exe) can handle minor issues, it often falls short in cases of severe corruption or when dealing with orphaned OST files. In such situations, EdbMails OST to PST Converter provides a more comprehensive and reliable solution. To safeguard against data loss, maintaining regular backups of your OST files is highly recommended. If you can open the original Outlook Data File, you might be able to recover additional items. The Inbox Repair tool creates a backup file with the same name as the original, but with a .bak extension, and saves it in the same folder. There may be items in the backup file that you might be able to recover that the Inbox Repair tool couldn't. The Inbox Repair Tool is an in-built utility from Microsoft to overcome the Outlook PST file corruption issues. To sum up, we explored several methods to fix "Outlook won’t open" errors. Whether it’s a profile issue, a corrupted PST file, or faulty add-ins, the methods above can help you get Outlook running again. When Microsoft Outlook refuses to open, it’s incredibly frustrating. This issue often stems from common culprits like a corrupted user profile, a damaged data file (PST or OST), or even a minor conflict within its settings or add-ins. The good news is that most "Outlook won’t open" errors can be resolved with a few proven troubleshooting steps. If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application. The person who sent you the invitation will need to remove your permissions and then send a new invitation. Customers with only a 3rd party email address set up as the username of their Microsoft Account will be asked to add a 1st party Microsoft alias to their account before accessing Outlook.com. If you stop Gmail from blocking certain apps and accounts, your import might start working. In the account you're importing from, try allowing access to your account. If Outlook does not crash, this indicates that one or more Add-ins are to blame for the Outlook 365 crash. If this does not resolve the Outlook 365 crash issue, proceed to the next solution. Here is the next solution for your Microsoft Outlook keeps crashing on Windows. This step will show you how disabling the add-ins can help. The PST files will be repaired and the error will be resolved. Running the latest version of Outlook ensures you have the most recent fixes and updates. An outdated version can also be a cause of why Outlook keeps crashing unexpectedly. The simplest solution often resolves many software-related issues. Similarly, restarting your computer can clear temporary glitches and refresh your system’s resources. It enables you to recover data from damaged OST files and convert them into accessible PST format, preserving the original folder structure and formatting. Moreover, this tool can quickly recover email messages, calendars, tasks and other data from corrupted PST files. It also offers a filter option; users can filter items using different criteria when they want to have only the desired items to process. So, learn how to fix corrupted Outlook data files (PST) without the ScanPST.exe tool. ScanPST mostly validates and corrects errors in the internal data structures of a .pst file. In addition to that, it is usually easy to use, even if you’re not a tech-savvy person. We go above and beyond the average software reseller because we built our business on trust. As active members in the IT community, we work to support our clients’ businesses and provide them with peace of mind. So, for a worry-free and risk-free conversion, using the professional tool is the optimum choice. Support and Recovery Assistant performs diagnostic checks and returns potential solutions for you to try in order to resolve common Outlook startup issues Outlook issues. This should resolve the issue of ‘Outlook keeps crashing’. If not, you can try reinstalling Office 365 or repairing it. We often install Add-ins in Outlook to enhance Outlook’s functionality.